Design method for fine impedance matching of superturnstile antenna and characteristics of the modified batwing antenna

Sato, G.; Kawakami, Haruo; Sato, Haruka; Masters, R.

doi:10.1109/aps.1981.1148456

Cited by 7 publications

(3 citation statements)

References 2 publications

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“…Without the ground, this kind of antenna can be compact. The traditional turnstile antenna uses batwing radiator as the radiator which has broadband characteristics [5,6].…”

Section: Introductionmentioning

confidence: 99%

A non-uniform collinear dipole array for sub-6 band

Chen

2023

IEICE ComEX

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In the fifth-generation (5G) wireless communications, due to the advantages such as wide range and low cost, sub-6 frequency band is widely used. It is a challenge to develop the antennas for sub-6 base stations which are wide band, high gain and compact. In this paper, a center-fed collinear antenna array with a compact size is developed based on the turnstile antenna. Non-uniform dipole array has been used to achieve broadband so that the disadvantages of series can be improved. The gain bandwidth has been significantly increased as compared to uniform array antennas. Wider directivity gain bandwidth of 35% is provided by the non-uniform array. The proposed array antenna can be used to omnidirectional radiation applications. The directivity gain bandwidth reached to 20.7% better than traditional series-fed antennas.

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“…Without the ground, this kind of antenna can be compact. The traditional turnstile antenna uses batwing radiator as the radiator which has broadband characteristics [5,6].…”

Section: Introductionmentioning

confidence: 99%

A non-uniform collinear dipole array for sub-6 band

Chen

2023

IEICE ComEX

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“…In , a super turnstile or batwing antenna was developed for VHF‐TV broadcasting transmission. In , the researchers proposed the modified batwing antennas. Nevertheless, had reviewed the works of and noted that in practice these antennas require a balun and an impedance matching device, which is a complex feeding system and the subsequent feeding loss and high cost.…”

Section: Introductionmentioning

confidence: 99%

Broadband planar dipole array Antenna with double C-shaped slit elements for digital TV broadcasting transmission

Osklang

Phongcharoenpanich

2016

Int J RF and Microwave Comp Aid Eng

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This research has proposed a planar rectangular dipole antenna enclosed in double C-shaped parasitically slit elements (i.e., radiator element) on a double-cornered reflector for bandwidth enhancement. In the study, simulations were first carried out to determine the optimal parameters of the radiator element and then a radiator element prototype was fabricated and mounted onto a double-cornered aluminum reflector. The simulated and measured |S 11 |<-10 dB of the antenna element covered the frequency ranges of 451-901 MHz (66.6%) and 455-886 MHz (64.3%), respectively. The gain was enhanced by the subsequent deployment of multiple radiator elements to fabricate a four-element vertically array antenna on an elongated double-cornered reflector. The simulated and measured |S 11 |<210 dB of the array antenna, respectively, covered the 410-991 MHz (82.9%) and 415-886 MHz (72.4%) frequency ranges. The proposed array antenna radiates unidirectionally across the DTV frequency band with a measured front-to-back ratio and cross polarization >20 and <223 dB, respectively. The simulated and measured half-power beam widths in the E and H planes were respectively 568 6 138 and 208 6 68; and 578 6 138 and 218 6 68. In addition, the simulated and measured gains of the array antenna were 12.8-16.4 dBi and 11.3-15.8 dBi along the 470-862 MHz frequency range. This proposed array antenna is thus suitable for DTV broadcasting transmission. V C 2016 Wiley Periodicals, Inc. Int J RF and Microwave CAE 26:466-478, 2016.

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“…In [12][13][14][15][16][17][18][19], different types of broadcasting antennas for base station were developed and proposed. The antennas in [12][13][14] are a balance fed modified batwing radiator which could achieve the broadband characteristics appropriate for DTV applications. As a result, the broad range frequency coverage was achieved; however, in practical use these antennas require the balun and the impedance matching circuit.…”

Section: Introductionmentioning

confidence: 99%

Unidirectional bowtie array antenna with incision gap for digital video broadcasting‐T2 base station

Luadang

Phongcharoenpanich

2015

IET Microwaves, Antennas & Propagation

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This study presents a unidirectional bowtie array antenna with incision gap for a digital video broadcasting‐T2 base station application. The antenna element consists of a bowtie radiator with incision gap on top of a square reflector. The element achieves a bandwidth of 82.35% for |S11| of <−10 dB, covering a frequency range of 450–1080 MHz. The antenna array comprises of four identical antenna elements mounted vertically to form an antenna array. The simulated and measured results of the antenna array show a good impedance matching for |S11| of <−10 dB along a frequency range of 450–1014 MHz (77.05%). The measured gains are 13.4–16.1 dBi along an operating frequency of 470–862 MHz with the narrow half‐power beamwidth in the vertical plane of ∼15° ± 5° and the half‐power beamwidth in the horizontal plane of ∼60° ± 5° for a frequency range of 470–666 MHz and 90.5° for 862 MHz. The radiation pattern is degraded at the frequency higher than 950 MHz.

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Design method for fine impedance matching of superturnstile antenna and characteristics of the modified batwing antenna

Cited by 7 publications

References 2 publications

A non-uniform collinear dipole array for sub-6 band

A non-uniform collinear dipole array for sub-6 band

Broadband planar dipole array Antenna with double C-shaped slit elements for digital TV broadcasting transmission

Unidirectional bowtie array antenna with incision gap for digital video broadcasting‐T2 base station

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